C. Wolters et al., BULK PROCESSING OF HGBACUO HIGH T-C SUPERCONDUCTORS BY A 2-ZONE TECHNIQUE, IEEE transactions on applied superconductivity, 5(2), 1995, pp. 1506-1509
Hg1201 superconductors have been synthesized from Ba-Cu-O precursors i
n a two zone assembly. Critical temperatures of 92 K as prepared and 9
5 K after oxygen annealing resulted. The Hg1201 phase forms at mercury
pressures above 6 bar (800 degrees C. The effect of dopants on meltin
g and annealing temperatures of the precursor materials has also been
studied. After Li doping of up to 20 %, melting peaks shift to lower t
emperatures and broaden significantly.